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October 24, 2008, 10:25 PM | #1 |
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.44 Mag rim thickness problem
A guy I work with had a problem with a Super Blackhawk and one brand of ammo he got to try it out. It wouldn't drop into the chambers fully and made rotating the cylinder very difficult (binding). The other brand worked just fine.
On examination, he found the rim had a "step" which was catching on the edge of each chamber. This almost looked like the cartridge base was a separate piece, crimped on to the rest of the cartridge. This isn't possible, is it? More likely some manufacturing error in turning the rim, after it gets out of the heading press. Anyone have any experience with how pistol brass is actually made?
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October 24, 2008, 10:53 PM | #2 |
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"...the rim had a "step"..." Sounds like a manufacturing defect to me.
This is about rifle brass, but the process is similar. http://accurateshooter.wordpress.com...brass-is-made/
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October 24, 2008, 11:05 PM | #3 |
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I'd guess you're right, just a few bad pieces of brass...it happens. I just finished processing several thousand .40 caliber range-pickups, double-cleaning & running them through EGW U-Dies I have set up on a turret just for that purpose. I had two cases that would not fit into the RCBS shellholder due to being a bit too thick on the rim. Never seen it before in any caliber and in hindsight, I wish I'd saved the cases for furthur inspection. I do remember that they were both the same headstamp and as best I recall, Winchester (who would'a thought it).
Also found a variety of other anomalies as well and some of my previous ideas on "preferable" brass has evolved. Flash holes are all over the place in consistency (found 1 case with flash hole big as a match stem), had a couple of obviously once-fired splits and some of the S&B in 9MM is not brass at all but rather, is merely brass-coated steel. Despite the "dished-out" case head design of CCI/Blazer brass, it seems to be one of the more overall consistent brands. Go figure...
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October 24, 2008, 11:34 PM | #4 |
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"...found 1 case with flash hole big as a match stem..." That a Winchester NT case? The flash hole is bigger on them.
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